This converter turns square kilometers into square meters instantly, using the exact factor 1 square kilometer = 1000000 square meters. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
One million square metres — the unit for cities, lakes and districts. The SI unit of area and the global standard for floor space.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
square kilometers- The amount you are converting, measured in square kilometers
1000000- The exact number of square meters in one square kilometer
square meters- The converted result
How it works, step by step
- Enter the number of square kilometers you want to convert.
- The value is multiplied by 1000000, the exact conversion factor.
- The result is displayed in square meters, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 square kilometers
Multiply 5 by 1000000. That gives 5,000,000 square meters. A quick sanity check: one square kilometer is larger than one square meter, so the number should get bigger — and it does.
Converting 72 square kilometers
72 × 1000000 = 72,000,000 square meters. Working backwards, 72,000,000 ÷ 1000000 returns 72 square kilometers, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many square meters are in one square kilometer?
Exactly 1000000. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert square kilometers to square meters?
Square Meters = square kilometers × 1000000. To reverse it, divide instead: square kilometers = square meters ÷ 1000000, which is the same as multiplying by 1e-06.
Is the square kilometer bigger than the square meter?
Yes. One square kilometer equals 1e+06 square meters, so it is the larger unit.
Why does my answer differ slightly from other square-kilometers to square-meters converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a square kilometer?
One million square metres — the unit for cities, lakes and districts.
What is a square meter?
The SI unit of area and the global standard for floor space.
Square Kilometers to square meters reference table
| Square Kilometers | Square Meters |
|---|---|
| 0.5 km² | 500,000 m² |
| 1 km² | 1,000,000 m² |
| 2 km² | 2,000,000 m² |
| 3 km² | 3,000,000 m² |
| 5 km² | 5,000,000 m² |
| 10 km² | 10,000,000 m² |
| 15 km² | 15,000,000 m² |
| 20 km² | 20,000,000 m² |
| 25 km² | 25,000,000 m² |
| 50 km² | 50,000,000 m² |
| 75 km² | 75,000,000 m² |
| 100 km² | 100,000,000 m² |
| 250 km² | 250,000,000 m² |
| 500 km² | 500,000,000 m² |
| 1000 km² | 1,000,000,000 m² |
Exact factor: 1 square kilometer = 1000000 square meters. Values rounded for display.